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The singer/actress found fame playing Miley Stewart, a high school student leading a secret double life as pop star Montana, but Disney bosses announced earlier this year that the upcoming fourth season would be the last.

Cyrus, along with her co-stars Emily Osment, Jason Earles and Romi Dames, marked their last episode with a lavish bash at Los Angeles hotspot h.wood - and although the 17-year-old's boyfriend Liam Hemsworth wasn't in attendance, there was one surprise guest.

A source tells Hollywood Life, "There was no Liam in sight, but Will Smith stopped by the Hannah Montana wrap party to drop off his kids (Willow and Jaden). They're big Hannah Montana fans. At one point, Will's hit song Welcome to Miami was played, and Willow was dancing along with Miley. It was so cute!"

"Miley and the rest of her cast, Emily Osment, Jason Earles and Romi Dames were celebrating with a casino-themed party. They had a congratulatory cake, sushi, hot dogs and fries, a fondu set-up by chef Mark Mittelman, a doughnut cart, sugar cookies and custom tea blends."